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tubman · 09-23-2018, 08:16 PM

When I built my engine test stand, I set it up for 12 volt negative ground and bought a appropriate solenoid from NAPA.

About 6 months later, I had a '51 Mercury engine I wanted to test. I put my Optima battery in the battery box and switched a few wires around, and tried the engine; it stared and ran great. A couple of days later, I realized that I had not changed the solenoid. Since it worked with no problem, I just shrugged my shoulders and kept on doin' what I was doin'.

That was about three years ago, and I have had several engines on the stand (both 6 and 12 volt) since, and the solenoid has never missed a beat.

09-23-2018, 08:16 PM	#8
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 11,629	Re: 52 F1 solenoid When I built my engine test stand, I set it up for 12 volt negative ground and bought a appropriate solenoid from NAPA. About 6 months later, I had a '51 Mercury engine I wanted to test. I put my Optima battery in the battery box and switched a few wires around, and tried the engine; it stared and ran great. A couple of days later, I realized that I had not changed the solenoid. Since it worked with no problem, I just shrugged my shoulders and kept on doin' what I was doin'. That was about three years ago, and I have had several engines on the stand (both 6 and 12 volt) since, and the solenoid has never missed a beat.